package com.ruoyi.framework.security.filter;

import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.framework.web.service.TokenService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;

/**
 * token过滤器 验证token有效性
 *
 * @author ruoyi
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {

  /**
   * 简单粗暴的设置接口白名单，登录及注册一些方法无需验证token，对于app或者前端来说，清除 Authorization 非常不爽
   */
  private static final List<String> WHITELIST = Arrays.asList(
      "/api/appUser"
  );

  @Autowired
  private TokenService tokenService;

  @Override
  protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
      throws ServletException, IOException {

    String requestURI = request.getRequestURI();
    if (WHITELIST.stream().anyMatch(requestURI::startsWith)) {
      chain.doFilter(request, response);
      return;
    }

    LoginUser loginUser = tokenService.getLoginUser(request);
    if (StringUtils.isNotNull(loginUser) && StringUtils.isNull(SecurityUtils.getAuthentication())) {
      tokenService.verifyToken(loginUser);
      UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(loginUser, null, loginUser.getAuthorities());
      authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
      SecurityContextHolder.getContext().setAuthentication(authenticationToken);
    }

    chain.doFilter(request, response);


  }


}
